Is it possible to easily view the actual (not displayed) value of a cell?

Question

Is it possible to easily view the actual value of a cell calculated by a formula, not the displayed value after it has been rounded off?
For instance, if you enter the number 1.23456789 and display it rounded to 3 decimal places, you can still see the full, actual value in the formula bar:
The problem arises when you reference that number in a formula: you can't see the underlying value (even though it's obviously known to Numbers):
Is there a way to get the formula bar (or a tooltip) to show the full, unrounded value? Changing the display to more decimal places is not very convenient, especially on big spreadsheets. Maybe it could be done via AppleScript?
A related issue arises when you try to look at the sum or average of a number: if the numbers being summed have the same number of rounded decimals, the sum displayed is rounded too. I find this very annoying: I want to see the actual value, not how my spreadsheet may be displaying it in that cell.
Although, curiously, rounding to any number of decimals as long as they are not all the same displays the full, correct underlying values:
Has anyone come up with workarounds for these issues?

Answer 1

I did it with an AppleScript.
Now any time I have a cell or cell range selected, I do one click (AppleScript menu > Display Value at Full Precision), and it shows me a popup alert that simply reads:
     rowname : columnname
     value
Here's the script:
tell application "Numbers"
          try
                    set selectedTables to (tables of sheets of front document whose selection range is not missing value)
                    repeat with selectedTable in selectedTables -- tables of each sheet
                              if contents of selectedTable is not {} then -- the list is not empty, it's the selected sheet
                                        set selectedCells to cells of selection range of (get item 1 of selectedTable)
                                        repeat with i in selectedCells -- each selected cell
                                                  set {selectedRow, selectedColumn, selectedVal} to {row, column, value} of i
  --                                                  display alert "value of " & name of selectedRow & " : " & name of selectedColumn & " (" & address of selectedRow & ":" & address of selectedColumn & ")" message selectedVal
  display alert name of selectedRow & " : " & name of selectedColumn message selectedVal
                                        end repeat
                                        return
                              end if
                    end repeat
          on error eMsg number eNum
  display alert eMsg
          end try
end tell
( Props to Jacques Rioux who posted code to get me started at https://discussions.apple.com/thread/3964938 )